🚀 go-pugleaf

>> I would like to intercept calls to an Operating System or Toolbox routine 
>> (specifically, GetNextEvent) and do some pre- and/or post-processing of my 
>> own.  NGetTrapAddress and NSetTrapAddress seem useful to do it.
>
> Actually, there is a hook for GetNextEvent which may be used.  There was an
> article about it in MacTutor last year or so.  I believe the global is 
> JGNEFilter or something like that.  You might want to look up that issue.

I checked all tables of contents of MacTutor and got the following list:

vol/no year/month title                           author           page
2/12   86/dec     Trap Speed comments             ???              6
2/10   86/oct     Reduce your time in the traps   Mike Morton      21
1/10   85/sep     C Glue routines for Filter Procs Van Kichline    53
1/6    85/may     In line traps simulate OS calls ???              53
1/5    85/apr     In line traps create windows    ???              20
1/3    85/feb     traps and so FORTH              ???              23

Is there anybody out there who can tell me which article talks about 
"jGNEFilter" ?  Or is the article missing in the above list?

Also, any information about jGNEFilter/NGetTrapAddress/NSetTrapAddress
will be appreciated (I have already checked Inside Mac and Mac Tech Notes). 
Please e-mail to me. Thanks in advance.

Kyongsok KIM

Dept. of Computer Science; Univ. of Illinois at Urbana-Champaign

arpanet/csnet: kkim@a.cs.uiuc.edu
usenet/uucp  : {seismo, pur-ee, ihnp4}!uiucdcs!kkim